Ultrasonic vibrator

Details Ultrasonic vibrator Ultrasonic vibrator

1997-08-08

1999-07-27

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310323, H01L 4108

Patent

active

059295520

ABSTRACT:
An ultrasonic vibrator which is preferable for transporting a small flow rate of powder is realized. A leaked vibrating energy is reduced to increase an efficiency of the device. A variation in performance influenced by the supporting process is eliminated to attain a stable performance. A vibrating amplitude at the horn part acting against the powder is increased. An AC voltage is applied to the piezo-electric elements through the electrodes. The vibrator may generate a complex vibration of the primary extending or retracting vibration and a secondary flex vibration, a lower end of the horn part is rotationally vibrated at an elliptical orbit indicated. The elliptical orbit has an elongated diameter extending in a lateral direction. The vibrator is made such that the inserting end of the shaft having the upper end flange part fixed thereto supports a section of the complex vibration of the vibrator. The powder fed from the resilient tube is promoted in a leftward direction as viewed in the figure under an elliptical motion of the bottom surface of the hole.

REFERENCES:
patent: 3694675 (1972-09-01), Loveday
patent: 3789183 (1974-01-01), Conley
patent: 4352459 (1982-10-01), Berger et al.
patent: 5508580 (1996-04-01), Maeno et al.

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